The Temptations of Knowledge.—A glance through the gate of science acts upon passionate spirits as the charm of charms: they will probably become dreamers, or in the most favourable cases poets, so great is their desire for the happiness of the man who can discern. Does it not enter into all your senses, this note of sweet temptation by which science has announced its joyful message in a thousand ways, and in the thousand and first way, the noblest of all, “Begone, illusion! for then ‘Woe is me’ also vanished, and with it woe itself is gone” (Marcus Aurelius).